leetcode/array/242.py at master · tech-cow/leetcode · GitHub

Name: leetcode/array/242.py at master · tech-cow/leetcode · GitHub
Rating: 4.9 (9936 reviews)
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# HashTable方法1
defisAnagram1(self, s, t):
hash1= {}
hash2= {}

forcharins:
ifcharinhash1:
hash1[char] +=1
else:
hash1[char] =1

forcharint:
ifcharinhash2:
hash2[char] +=1
else:
hash2[char] =1

returnhash1==hash2

# HashTable方法2
defisAnagram2(self, s, t):
hash1= {}
hash2= {}

forcharins:
hash1[char] =hash1.get(char, 0 ) +1
forcharint:
hash2[char] =hash2.get(char, 0) +1

returnhash1==hash2

# HashTable方法3 利用Unicode，创建2个 Fixed Size Array
defisAnagram3(self, s, t):
"""
 :type s: str
 :type t: str
 :rtype: bool
 """
hash1= [0]*26
hash2= [0]*26

forcharins:
hash1[ord(char) -ord('a')] +=1
forcharint:
hash2[ord(char) -ord('a')] +=1

returnhash1==hash2


# HashTable方法4 利用Unicode，创建1个 Fixed Size Array
defisAnagram4(self, s, t):
"""
 :type s: str
 :type t: str
 :rtype: bool
 """
arr= [0]*26

forcharins:
arr[ord(char) -ord('a')] +=1
forcharint:
arr[ord(char) -ord('a')] -=1

fornuminarr:
ifnumisnot0:
returnFalse
returnTrue